Just this Friday, almost 6 to 7 weeks after my breast implants and lift surgery I found a golf ball sized lump or knot on the left side of my boob. I didn't even notice it until then. I had a mammogram in august which was 2 months ago and the mammogram was fine but there is a history of breast cancer in my family. The plastic surgeon said without seeing it they don't know so I am going to get an ultrasound on wed and seeing a breast specialist. is it more likely it is cancer or from the surgery?